Denso unit -7
7-9.1Injection system engine misfire / no injection
CHECK NG
1. Check whether the vehicle lights EMS fault lights? Troubleshooting.
2. Check the battery voltage has 12.3V? Replace or recharge batteries.
3. Check the fuse if there is broken wire? Fuse broken wire replace with new one.
4. Open the main switch to check whether the relay Check the relay is normal?
actuation sound? (2 beeps)
5. Check the main switch or main relay – orange line Replace the main switch or wire open
if there is 12V voltage? circuit.
5.1 Check the main switch burglar resistance - Replace the main switch.
green line, gray line whether there 330
ῼ
?
6. Check the main relay - dark green line, orange line Check the wiring or fuse (10A).
Are there 12V ?
6.1 Check the main relay - Blue / White line and Check the Topple switch
frame grounding is conducting?
6.2 Check the main relay (actuator) - Green / Black Check the main relay
line Are there 12V ?
7. Check the fuel pump relay - Red / White line Are Fuse (5A)
there 12V ?
7.1 Check the fuel pump relay - dark green line wire open circuit or ECU is bad.
(ECU relay)
，
wire whether the conductive? with the frame whether the conductive?
7.2 Check the fuel pump relay (actuator) - Red line Replace the fuel pump relay
Are there 12V ?
(ignition)
8. Check the ignition coil - red line Are there 12V? wire open circuit
8.1 Check the ignition coil -Brown / White line wire open circuit or ECU is bad.
(ECU ignition coil) whether the conductive? with the frame whether the conductive?
8.2 Check the ignition coil is normal Replace the ignition coil
(Injection )
9. Check the fuel pump – Red Are there 12V ? wire open circuit
9.1Check the fuel pump -black line and the frame wire open circuit
ground whether the conductive?
9.2Check the fuel pump - Are there actuation, Replacing fuel pump
hydraulic adequacy?
9. Check the fuel injector - Red line Are there 12V ? wire open circuit
9.1Check the fuel injector -Brown / White line wire open circuit or ECU is bad.
(ECU injector) whether the conductive? with the frame whether the conductive?
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